Thanks for the comment.
I don’t think we have run into this problem…or maybe we have never tried exactly what you tried.

Still, you are right that there are always some funny things you find when you look at ecommerce transactions data.
For example, in ecommerce transactions you seem to lose the hostname information.
I think the information is not recorded in the hit that is sent to Google.
Go check on a site that tracks ecommerce transactions and watch most of them attributed to (not set) instead of the proper hostname.